Yamaha - Starting Motor Gear Assembly Starter Drive System 69W-81807-00-00. Overview. When you hit the key, this is one of the parts making that initial crank happen. If everything's working right, the engine turns over smooth and fires up without hesitation. But when this gear starts wearing out, you'll hear it-grinding, slipping, or just not catching like it should. It's one of those components you don't see, but you definitely notice when it's not doing its job.. Key Features. Reliable Starter Engagement - Connects the starter motor to the engine for consistent cranking.. Precision Gear Meshing - Designed for smooth contact to reduce grinding during startup.. Durable Gear Construction - Built to handle repeated start cycles and engine load.. OEM Fit Accuracy - Matches Yamaha specifications for proper alignment and operation.. Engine & Boat Compatibility. Designed for Yamaha outboard engines using this style of starting motor gear assembly. Commonly used across a range of Yamaha appl